<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 2、结构 -->
      <div id="main" style="width: 750px; height: 400px"></div>
    </el-card>
  </div>
</template>

<script>
// 1、导入echarts
import echarts from 'echarts'
import _ from 'lodash'
export default {
  data() {
    return {
      options: {
        title: {
          text: '用户来源',
        },
        tooltip: {
          trigger: 'axis', // 触发类型
          axisPointer: {
            // 坐标轴指示器
            type: 'cross', // 十字准星
            label: {
              backgroundColor: '#E9EEF3',
            },
          },
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true, // 坐标轴是否包含刻度
        },
        xAxis: [
          {
            boundaryGap: false,
          },
        ],
        yAxis: [
          {
            type: 'value',
          },
        ],
      },
    }
  },
  async mounted() {
    // 初始化echarts实例对象
    var myChart = echarts.init(document.getElementById('main'))
    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200)
      return this.$message.error('获取折线图数据失败')
    const result = _.merge(res.data, this.options)
    // 将数据挂到实例对象身上
    myChart.setOption(result)
  },
}
</script>

<style lang="less" scoped>
</style>